Enable support for MSI PRO B850-P WIFI (MS-7E56) motherboard

Matthew Everittrequested to merge
mat.everitt/OpenRGB:MSI-PRO-B850-P-WIFI_(MS-7E56) into master

Simply adds a copy of the MSIMysticLight761Controller config for another motherboard, the "B850-P WIFI (MS-7E56)". Working happily for me on Bazzite:

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